The videos here represent wide range of topics in physics and math including such as Olympiad problems, problems from textbooks, logic problems, intelligence tests, problems with hidden pitfalls, problems from standardized tests, and many others.
All these problems are designed for high school and college students. Some of them fit the level of physics and mathematics majors of universities.
Specifically, the posted videos cover the following topics:
Mathematics:
Simplification of algebraic expressions
Solution of various algebraic equations,
Trigonometric equations
Geometry
Math Olympiad problems
Logic problems
Physics;
Mechanics
Law of conservation of energy, linear and angular momentum
Motion on rough and frictionless surfaces
 Electricity and magnetism
Electric potential
Capacitors and Capacitance
Current, resistance
Inductors and Inductance
Hydrodynamics
Archimedes, Pascal, and Bernoulli Laws, Buoyant force
Waves: Interference, polarization, light as E&M wave